// Botão genérico da interface
// Last edited on 2000-09-01 10:28:45 by stolfi

import java.awt.Canvas;
import java.awt.Image;
import java.awt.Dimension;
import java.awt.Event;
import java.awt.Graphics;
import java.awt.image.ImageObserver;
import java.net.URL;
import PlinImage;
import InterfaceGrafica;
    
public class PlinFerramenta extends Canvas implements ImageObserver
  {
    // Instância de InterfaceGrafica que é manipulda por esta ferramenta:
    InterfaceGrafica raiz;
    static int xSize = 40;
    static int ySize = 40;

    // Estado interno genérico da ferramenta:
    Image image_up;
    Image image_dn;
    String name;
    boolean is_up = true;

    public void initFerramenta(
        String imageName, 
        String ferrName, 
        InterfaceGrafica z
     )
      { raiz = z;
        name = ferrName;
        image_up = PlinImage.getImage(raiz, imageName + "01.gif");
        image_dn = PlinImage.getImage(raiz, imageName + "02.gif");
        int xS = image_up.getWidth(this);  if (xS > xSize) { xSize = xS; }
        int yS = image_up.getHeight(this); if (yS > ySize) { ySize = yS; }
        is_up = true;
      }

    public Dimension getMinimumSize()
      { return(new Dimension(xSize, ySize)); }

    public Dimension getPreferredSize()
      { return(getMinimumSize()); }

    public boolean mouseDown(Event evt, int x, int y)
      { is_up = false;
        repaint();
        return(true);
      }

    public boolean mouseUp(Event evt, int x, int y)
      { if (inside(x,y))
          { is_up = (! is_up);
            System.out.println(name + " mouseUp");
            Event ev = new Event
              (this, evt.when, Event.ACTION_EVENT, x, y, evt.key, evt.modifiers, name);
            deliverEvent(ev);
          }
        else
          { System.out.println(name + " aborted"); }
        repaint();
        return(true);
      }

    public void setButton(boolean state)
      { is_up = state;
        repaint();
      }

    public void update(Graphics g)
      { paint(g); }

    public void paint(Graphics g)
      { if (is_up)
          { g.drawImage(image_up, 0, 0, this); }
        else
          { g.drawImage(image_dn, 0, 0, this); }
      }
  }